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Air conditioner fault detection device, method and system

An air conditioner fault detection and detection device technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve problems such as complicated operation, and achieve the effects of simple operation, convenient maintenance, and high fault detection accuracy

Active Publication Date: 2016-01-06
QINGDAO HAIER TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide an air conditioner fault detection device, which solves the technical problem of complex operation when the existing air conditioner fault detection device detects

Method used

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  • Air conditioner fault detection device, method and system
  • Air conditioner fault detection device, method and system
  • Air conditioner fault detection device, method and system

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Embodiment Construction

[0034] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0035] The air conditioner fault detection device of the present invention is directly connected with the live line, neutral line and signal line between the indoor unit and the outdoor unit of the air conditioner, collects the voltage signal of the signal line, separates the voltage signal transmitted on the signal line through a comparison circuit, and obtains respectively The communication signal sent by the indoor unit and the outdoor unit transmits the communication signal to the microprocessor, and the microprocessor determines the fault and status information sent by the indoor unit and outdoor unit of the air conditioner according to the separated communication signal, which can quickly find the fault point and facilitate after-sales personnel operate.

[0036] Such as figure 1 As shown, this embodiment discloses an air conditioner fa...

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Abstract

The present invention relates to an air conditioner fault detection device, method and system. The air conditioner fault detection device is directly connected with a live line, a null line and a signal line between an indoor unit and an outdoor unit, voltage signals of the signal line are collected, the voltage signals transmitted on the signal line are seperated through comparison circuits thus to obtain communication signals transmitted by the indoor unit and the outdoor unit, the communication signals are transmitted to a microprocessor, the microprocessor determines fault and status information sent by the indoor unit and the outdoor unit, and fault points can be rapidly found, thereby bringing convenience for operation by the after-sale personnel. Meanwhile, a second threshold voltage of a second comparison circuit changes along with a power voltage, upper part waveforms transmitted on the signal line can thus be accurately separated without being influenced by changes of the power voltage, and thus the fault detection precision is high.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner fault detection device, method and system. Background technique [0002] At present, during the after-sales maintenance of the air conditioner, the fault information of some outdoor units can only be seen after the outdoor unit is disassembled, so as to further investigate the fault condition of the air conditioner. But, because the outdoor unit is mostly installed outdoors, it is very inconvenient for maintenance personnel to operate. Therefore, in order to solve the above problems, the current air conditioner generally reserves a monitoring interface on the electric controller of the indoor unit, and detects the failure of the air conditioner through a weak current method. It is collected and displayed. However, the indoor unit needs to be disassembled to connect to the monitoring interface of the indoor electric controller. The operatio...

Claims

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Application Information

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IPC IPC(8): G01R31/00
Inventor 安洪光董金盛
Owner QINGDAO HAIER TECH
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